CII 10070

The CII 10070 is a discontinued computer system from the French company CII. It was part of the first series of computers manufactured in the late 1960s under Plan Calcul.

The 10070 is a rebadged Scientific Data Systems (SDS) Sigma 7. In addition to the Sigma software, a new operating system was developed by teams from INRIA.

The 10070 is optimized for scientific calculation. It has 32-bit words, byte addressing, and 16 index registers. It can handle both batch processing, and time-sharing. It also has mémoire topographique as a standard feature, similar to virtual memory except that it is only intended for instant memory-to-memory remapping for performance reasons, with no support for managing swapping to disk. This is managed by the time-sharing monitor.

The 10070 served as the basis for the design of the Iris 50 and Iris 80 series, which were entirely manufactured by CII.

Operating systems
The CII 10070 runs several SDS and locally developed operating systems:


 * BPM (Batch Processing Monitor), single-stream batch processing system with independent tasks, called symbionts, to process card and printer inputs and outputs. This system was supplied by SDS.
 * BTM time sharing system from SDS.
 * Siris 7 from CII, a version of Siris 8 for the Iris 80.
 * An experimental system, Ésope, was developed at IRIA.

Languages and utilities
Most of the software for the 10070 also came from SDS:
 * Fortran IV H compiler
 * Symbol (assembly language)
 * Metasymbol, a more powerful assembler
 * COBOL compiler
 * PL/I compiler
 * Sort
 * CII Document retrieval system: Mistral